Home / 143,766,386.20-215,523,608.10-86,197,547.80

Finding the Fourth Proportional to 143,766,386.20, 215,523,608.10 and 86,197,547.80

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Solution

The fourth proportional to 143,766,386.20, 215,523,608.10 and 86,197,547.80 is: 129,220,793.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,766,386.20 : 215,523,608.10 = 86,197,547.80 : x
  2. Step 2: Convert to fraction form
    143,766,386.20/215,523,608.10 = 86,197,547.80/x
  3. Step 3: Cross multiply
    143,766,386.20x = 215,523,608.10 × 86,197,547.80
  4. Step 4: Simplify right side
    143,766,386.20x = 18,577,606,511,228,216
  5. Step 5: Solve for x
    x = 18,577,606,511,228,216/143,766,386.20
  6. Step 6: Final answer
    x = 129,220,793.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.